Synonyms to developmental

expanding, amplifying, crescendoing, crescent, dilatative, dilative, enlarging, expatiating, growing, increasing, incremental, intensifying, lengthening, multiplying, on the increase, proliferating, snowballing, spreading, swelling, tightening, waxing, experimental, conjectural, cut-and-try, determined, empirical, experiential, exploratory, heuristic, hit-or-miss, hypothetical, pilot, preliminary, preparatory, probationary, probative, probatory, proving, provisional, resolute, speculative, temporary, tentative, test, testing, theoretical, trial, trial-and-error, trying, venturesome, verificatory, willing